Origin and characteristics of ambiguous properties in measuring physical parameters of twisted nematic liquid crystal spatial light modulators

Makoto Yamauchi

doi:10.1117/1.1466851

1 May 2002 Origin and characteristics of ambiguous properties in measuring physical parameters of twisted nematic liquid crystal spatial light modulators

Makoto Yamauchi

Author Affiliations +

Optical Engineering, Vol. 41, Issue 5, (May 2002). https://doi.org/10.1117/1.1466851

Twisted nematic liquid crystal spatial light modulators have been widely used for such applications as optical information processing and real-time holography. It is important to experimentally determine the physical parameters of the modulators to control their modulation characteristics. The parameters are usually calculated from a set of measured intensity transmittances. We mathematically prove that the calculation always suffers from ambiguities, and there exist two distinct origins. Neglecting absolute phase is one source of ambiguity; the other relates to the quasisinusoidal dependence of the complex amplitude transmittance on the parameters. Jones matrix formalism is used to analyze the ambiguity, and interesting examples are presented.

©(2002) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Makoto Yamauchi "Origin and characteristics of ambiguous properties in measuring physical parameters of twisted nematic liquid crystal spatial light modulators," Optical Engineering 41(5), (1 May 2002). https://doi.org/10.1117/1.1466851

Published: 1 May 2002

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available